Transparent sign.



A. T. FISCHER.

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InmlmmImmmmllflllllllillllnn UNITED sfrarns AT` IFICE.

ALBERT il?.y FISCHER, OF CLEVELAND, OHIO.

TRANSPARENT SIGN.

Application filed September 7, 1909. `Serial No. 516,635.

-'To all fathom it may concern:

Be it known that I, ALBERT T. FISCHER, citizen of the UnitedStatesresiding at Cleveland, in the county of Cuyahoga and State .ofOhio, 'have' invented certain new and useful Improvements in TransparentSigns, of which the following is a specification. My invention hasreference to transparent signs, and the invention consists'in a signhaving the transparent portion thereof printed upon both sides of asheet of paper or equivalent transparent .or translucent material andsurrounded by a dark or opaqu'e contrasting background. The sign orrelatively transparent portion proper may consist in letters, numerals,fanciful or practical designs of any kind or character, gures orpictures of various objects and whatever may be preferred to representin this Way and in varying colors, shades and tints, the range ofpossibilities in these particulars being practically unlimited and asWide as tlieprinters art. With it all, however, there is necessarilypresent a practically dark or non-transparent ield or background to givecontrast and full expression t0 the design, and the invention resides ina signhaving the. character or picture or Whatever the object may bedisplayedby printing alike upon both sides and on a singlesheet of paperor other material which in itself is transparent and has such charactersor pictures developed thereon in relatively transparent colors, or blankin the body ofthe sign, but with the body or surrounding portion of thepaper covered With Ink or other darkening substance to give the desiredrelief to the picture.

Reference should be had to the accompanying drawing in Which- Figure lis the front elevation of a portion of a sign embodying my invention;and Fig. 2 is a rear elevation of the showing in Fig. l.

For the purpose of illustrating one embodiment of my invention I haveshown in .the drawing a signin which the body l is of relativelytransparent material, upon Which` the sign characters indicated at l0,11 are preferably printed in relatively transparent shades, While theportion of-t-he back-ground 8, 9 immediately surrounding the charactersis quite dark for the purpose of giving contrast and expression to thedesign. "A lighter tint or shade of the same pression.

color or a different color may form an auxiliary back-ground as shown in2, 4 While the Whole may be framed by a 'marginal portion 5,7, andborder strips 3, Q of any desired shadesi, tints or colors. To make asign of this kind the utmost possible exactness needs to be practiced inorder .that all the finer lines of the picture shall be preserved, be-

cause when viewed from either side the pic` ture must have the perfectoutlines. of a single-clean imprint, and any lack of exactness inproducing the picture or Which Would mar or blur the outlines Woulddefeat the invention. Hence I prefer'toemploy an exact Working printingpress 4for this purpose, say one that has a reciprocating bed adapted tocarry a printing form and a revolving or oscillating cylinder t0 runover the same to make' the desired im- The ordinary method of printingis not, however', to be followed in this case. On the contrary, Irequire the cylinder to perform a 'double function instead of only oneas heretofore. Thus, having a form for the sign in proper position onthe bed of the machine I first ink the same as usual and .same time.'

The foregoing outline as to a 'practical method of producing atransparent sign according to my invention constitutes present preferredmethod but does'nct bar the use ofothers, butin anyevent it deespractically exclude. running the through a machine the old Way pri -tingon one side at a time and then en the other. The measure of exaotnessrequired also my Then I introduce the' ico in the delicate outlines of atransparent picture printed on both sides` would seem to render anyprocess of successive or progressive print-ing impracticable.

As above indicated, I begin'vvith a' relatively transparent material,necessarily. In.

y parent material, a eoating substance-applied fof the material. andonly `print the bacin' sion of the background ci the sign, the two signcharacters' are caused to appear by the A sign characters with the light4passing Sonie l .may cover this with my forni in such way to workoutlines of characters, such as letters or figures and desivns bfdii'erent kinds directly upon the suriace by printing lto one side ofsaid body so as to form aL positive impression. of the baclrground ofthesign, and a coating substance, applied by printing to the reyerse sideor the body so as to forro a negative 4impresccatings being sopositioned that the background is formed in every part or a doubiethickness or" said substances, whereby the contrast of the lightpassingjthrongb. the

through tbe background. e

2. ln a sign, a `body ci relatively transparent material., a coatingepplied by print ing to one side oi? the body so as to forno a positiveimpression of the sign characters and ci." the background therei'or9 anda coating appiied by printing to the reverse side of the body so as toforni a nega tive impression of the sign characters and of thebackground therefor, the sign characters and the 'backgroundbeingprinted in coloring` mate;

rials of different degrees of transparency and the two coatings being sopositioned on the body as to cause the characters on the opposite sidesto fully register, whereby the sign characters are caused to appear bythe contrast of the light passing through them with the light passingthrough the background.

3. ln a sign, a body of thin, flexible and relatively transparentmaterial7 a coating applied by printing on one side of the body so as toform positive 'impression of the sign characters and of the backgroundtherefor, and a coating applied by printing on the reverse side of thebodyso as to form a negative impression oiv the signcha-racters and ofthe background. therefor, the sign characters and the background beingprinted in inks of diferentdegrees of transparency and the two coatingsbeing so positioned on the body as to cause the characters on theopposite sides to fully register, whereby the sign characters are causedto appear by the contrast of the light passing through them. with .thelight passing through the baclrground.

iin testimony whereof l. ailix my signature in' presence of two'Witnesses.

ALBERT T. FISCHER.

Witnesses:

E. M. Flsrnni, lf. C. MUssUN.

